The abundance of old water tanks in the area around Castejón del Puente indicates the ancestral necessity of man to store water in places were it was difficult to access.
The La Bella tank is located close to the chapel. It is rectangular in shape and made from huge ashlars. The channels carved from the rock carry rain water down into the tank and locals say that the 2 metre-deep structure is often full to the brim after storms.
To prevent animals and people falling into its depths, it is surrounded by a wall. Stairs made from immense blocks of sandstone allowed villagers to reach the water to fill their pitchers, an occurrence that continued until just a few years ago.